Motorola MVME187 User Manual

5-8

Using the 187Bug Debugger

These logical port numbers (0 and 1) are shown in the 
pinouts of the MVME187 as ÒSERIAL PORT 1" and 
ÒSERIAL PORT 2", respectively. Physically, they are all 
part of connector P2.

There are various ways to enter a user program into system 
memory for execution:

❏

Create the program with the assembler/disassembler

❏

Download an S-record object file

❏

Read the program from disk

You can create a program using the Memory Modify (MM) 
command with the assembler/disassembler option. 

1. Enter the program one source line at a time. 

2. After each source line is entered, it is assembled and the 

object code is loaded to memory. 

Refer to the Debugging Package for Motorola 88K RISC CPUs User's 
Manual for complete details of the 187Bug 
Assembler/Disassembler. 

Another way to enter a program is to download an object file from 
a host system. 

The program must be in S-record format (described in the 
Debugging Package for Motorola 88K RISC CPUs User's Manual) and 
may have been assembled or compiled on the host system.